Finding the Third Proportional to 644,112 and 929,016

Step by Step Solution

1. Step 1: Write the proportion equation
   644,112 : 929,016 = 929,016 : x
2. Step 2: Convert to fraction form
   644,112/929,016 = 929,016/x
3. Step 3: Cross multiply
   644,112x = 929,016 × 929,016
4. Step 4: Simplify right side
   644,112x = 863,070,728,256
5. Step 5: Solve for x
   x = 863,070,728,256/644,112
6. Step 6: Final answer
   x = 1,339,938.91